// C++ Template
#include "bits/stdc++.h"
using namespace std;
// Type
typedef long long ll;
typedef long double ld;
// Pair/Vector
typedef pair<ll, ll> ii;
typedef vector<ll> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
// Macro
#define stat(x) x && cout << "YES\n" || cout << "NO\n";
#ifdef LOCAL
#define debug(x) cout << #x << " = " << x << "\n";
#else
#define debug(x) ;
#endif
// Custom output
template <class A, class B>
ostream& operator << (ostream& out, pair<A, B> x){
out << "(" << x.first << ", " << x.second << ")";
return out;
}
template <class T>
ostream& operator << (ostream& out, vector<T> x){
out << "[";
for (int i=0; i<x.size(); i++){
if (i) out << ", ";
out << x[i];
}
out << "]";
return out;
}
void fastio(string finp = "", string fout = ""){
if (fopen(finp.c_str(), "r")){
freopen(finp.c_str(), "r", stdin);
freopen(fout.c_str(), "w", stdout);
}
}
// Const
const int interactive = 0;
const ld PI = acos(-1.0);
const ll allmod[2] = {int(1e9)+7, 998244353};
const ll mod = allmod[0];
const ll maxn = 2e5;
const ll inf = 1e18;
const int multitest = 0;
#define int long long
vi x, y, v, c;
vii tmp;
int cp(ii a, ii b){
return a.second < b.second;
}
void main_program(){
int n, m; cin >> n >> m;
v.assign(n, 0);
c.assign(n, 0);
tmp.assign(n, ii());
for (int i=0; i<n; i++) cin >> tmp[i].first >> tmp[i].second;
sort(tmp.begin(), tmp.end(), cp);
for (int i=0; i<n; i++){
v[i] = tmp[i].first;
c[i] = tmp[i].second;
}
x.assign(n, 0);
for (int i=0; i<n; i++) x[i] = v[i] + 2*c[i];
y.assign(n, 0);
int s = 0;
for (int i=0; i<m-1; i++) s += v[i];
for (int i=m-2; i<n; i++){
y[i] = s - 2*c[i];
s -= v[i - m + 2];
if (i < n-1) s += v[i+1];
}
debug(x); debug(y);
int mx = x[0];
int res = 0;
for (int i=m-1; i<n; i++){
res = max(res, y[i] + mx);
mx = max(mx, x[i-m+2]);
}
cout << res;
}
void pre_main(){
}
signed main(){
#ifdef LOCAL
auto start_time = chrono::high_resolution_clock::now();
#endif
if (!interactive) {ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);}
#ifndef ONLINE_JUDGE
fastio(".inp", ".out");
#endif
int t = 1;
if (multitest) cin >> t;
pre_main();
while (t--) main_program();
#ifdef LOCAL
auto end_time = chrono::high_resolution_clock::now();
double duration = chrono::duration_cast<chrono::milliseconds>(end_time - start_time).count();
cout << "\n[" << duration << "ms]\n";
#endif
}
Compilation message
cake3.cpp: In function 'void fastio(std::string, std::string)':
cake3.cpp:44:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
44 | freopen(finp.c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
cake3.cpp:45:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
45 | freopen(fout.c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
